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參數(shù)資料
| 型號(hào)： | TSH73CPT |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | WIDE BAND, LOW POWER OPERATIONAL AMPLIFIER WITH STANDBY FUNCTION |
| 中文描述： | 寬頻帶低功率運(yùn)算放大器的待機(jī)，功能 |
| 文件頁數(shù)： | 21/25頁 |
| 文件大?。?/td> | 1096K |
| 代理商： | TSH73CPT |
TSH70, 71, 72, 73, 74, 75
21/25
Example of a video application :
This example shows a possible application of the TSH7X circuit. Here, you can multiplex the channels for
the different standard PAL, NTSC as you filter for the different bands; the video signal can be filtered with
two different cutoff frequencies, corresponding to a PAL encoded signal (LPF1) or a NTSC signal (LPF2).
You can multiplex input signals, as the outputs are in high impedance state in standby mode.This enables
you, to use a PAL filter as the Standby mode is active and to use the NTSC filter otherwise.
The video application requires 1Vpeak at input and output.
Calculation of components:
A decoupling capacitor is provided to cutoff the frequencies below 10Hz according I bias.Hence Ce=10uF,
with Rb1=10K
. At the output, Cout=220uF.
The AOP1 is in 6dB configuration for the adaptation bridge. R1=R2=1K
.
V1=2Vpk. V2=1Vpk
For the PAL communication, we need a lowpass filtering. The load resistance R4 is function of the output
resistance of the filter.V3=V2/A1 where A1 is the attenuation factor of the filter LPF1.
To compensate the filter insertion loss, we add an additional factor to the gain of the 2nd amplifier AOP2.
For example, for an attenuation of 3dB, we choose R5=300
and R6=1K
. We have V4=2Vpk and
Vout=1Vpk.
The calculation of the parameters R7, C7, R8, C8, R9, R10 will be exactly the same .
Parameter
Phase Margin
f-3dB
Phase Margin
f-3dB
Phase Margin
f-3dB
Phase Margin
f-3dB
Cf (pF)
Vcc=!1.5V
28
40
30
40
37
37
48
33.7
Vcc=!2.5V
43
39.3
43
39.3
52
34
65
30.7
Vcc=!5V
56
38.3
56
38.3
67
32
78
27.6
Unit
deg
MHz
deg
MHz
deg
MHz
deg
MHz
0
5.6
22
33
IN
Ce
Re
Rb1
Vcc/2
C4
+
-
Vcc/2
+
-
+
-
Standby
Standby
R1
R2
R3
C3
R4
Rb1
R5
R6
R9
R10
Rout
OUT
AOP1
AOP2
AOP3
V1
V2
V3
V4
A1
Vcc/2
Vcc/2
Cf
Cf
Cf
Cout
Vcc/2
RL
R7
C7
R8
C8
LPF2
A2
PAL
NTSC
LPF1
Rb1
Vcc/2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSH74 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Rail-to-Rail, Wide-Band, Low-Power Operational Amplifiers |
| TSH74CD | 功能描述:運(yùn)算放大器 - 運(yùn)放 LOW POWER OP AMP RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| TSH74CDT | 功能描述:運(yùn)算放大器 - 運(yùn)放 Lo Pwr Oper Amp Wide Band RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| TSH74CPT | 功能描述:運(yùn)算放大器 - 運(yùn)放 Lo Pwr Oper Amp Wide Band RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| TSH75 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:WIDE BAND, LOW POWER OPERATIONAL AMPLIFIER WITH STANDBY FUNCTION |
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